//<!--
var lunarInfo=[
  0x04bd8,0x04ae0,0x0a570,0x054d5,0x0d260,0x0d950,0x16554,0x056a0,0x09ad0,0x055d2,
  0x04ae0,0x0a5b6,0x0a4d0,0x0d250,0x1d255,0x0b540,0x0d6a0,0x0ada2,0x095b0,0x14977,
  0x04970,0x0a4b0,0x0b4b5,0x06a50,0x06d40,0x1ab54,0x02b60,0x09570,0x052f2,0x04970,
  0x06566,0x0d4a0,0x0ea50,0x06e95,0x05ad0,0x02b60,0x186e3,0x092e0,0x1c8d7,0x0c950,
  0x0d4a0,0x1d8a6,0x0b550,0x056a0,0x1a5b4,0x025d0,0x092d0,0x0d2b2,0x0a950,0x0b557,
  0x06ca0,0x0b550,0x15355,0x04da0,0x0a5d0,0x14573,0x052d0,0x0a9a8,0x0e950,0x06aa0,
  0x0aea6,0x0ab50,0x04b60,0x0aae4,0x0a570,0x05260,0x0f263,0x0d950,0x05b57,0x056a0,
  0x096d0,0x04dd5,0x04ad0,0x0a4d0,0x0d4d4,0x0d250,0x0d558,0x0b540,0x0b5a0,0x195a6,
  0x095b0,0x049b0,0x0a974,0x0a4b0,0x0b27a,0x06a50,0x06d40,0x0af46,0x0ab60,0x09570,
  0x04af5,0x04970,0x064b0,0x074a3,0x0ea50,0x06b58,0x055c0,0x0ab60,0x096d5,0x092e0,
  0x0c960,0x0d954,0x0d4a0,0x0da50,0x07552,0x056a0,0x0abb7,0x025d0,0x092d0,0x0cab5,
  0x0a950,0x0b4a0,0x0baa4,0x0ad50,0x055d9,0x04ba0,0x0a5b0,0x15176,0x052b0,0x0a930,
  0x07954,0x06aa0,0x0ad50,0x05b52,0x04b60,0x0a6e6,0x0a4e0,0x0d260,0x0ea65,0x0d530,
  0x05aa0,0x076a3,0x096d0,0x04bd7,0x04ad0,0x0a4d0,0x1d0b6,0x0d250,0x0d520,0x0dd45,
  0x0b5a0,0x056d0,0x055b2,0x049b0,0x0a577,0x0a4b0,0x0aa50,0x1b255,0x06d20,0x0ada0];
var now = new Date();
var SD = now.getDate();

//==== 传回农历 y年的总天数
function lYearDays(y) {
  var i, sum = 348
  for(i=0x8000; i>0x8; i>>=1) sum += (lunarInfo[y-1900] & i)? 1: 0
  return(sum+leapDays(y))
}

//==== 传回农历 y年闰月的天数
function leapDays(y) {
  if(leapMonth(y))  return((lunarInfo[y-1900] & 0x10000)? 30: 29)
  else return(0)
}

//==== 传回农历 y年闰哪个月 1-12 , 没闰传回 0
function leapMonth(y) { return(lunarInfo[y-1900] & 0xf)}

//====================================== 传回农历 y年m月的总天数
function monthDays(y,m) { return( (lunarInfo[y-1900] & (0x10000>>m))? 30: 29 )}

var sFtv = ["元旦", "情人节", "妇女节", "植树节", "愚人节", "劳动节", "青年节", "护士节", "儿童节", "建党节", "建军节", "教师节","国庆节","圣诞节"];
var lFtv = ["春节", "元宵节", "端午节", "七夕", "中秋节"," 重阳节", "腊八节",  "小年", "除夕"];

//==== 算出农历, 传入日期物件, 传回农历日期物件
//     该物件属性有 .year .month .day .isLeap .yearCyl .dayCyl .monCyl

function getLunarDate(objDate) {

  var nowYear = objDate.getYear();
  nowYear += (nowYear < 2000) ? 1900 : 0;//当前年
  var nowMonth = objDate.getMonth() + 1;
  var nowDay = objDate.getDate();


  var i, leap=0, temp=0
  var baseDate = new Date(1900,0,31);
  var offset   = (objDate - baseDate)/86400000;

  this.dayCyl = offset + 40
  this.monCyl = 14

  for(i=1900; i<2050 && offset>0; i++) {
    temp = lYearDays(i)
    offset -= temp
    this.monCyl += 12
  }
  if(offset<0) {
    offset += temp;
    i--;
    this.monCyl -= 12
  }

  this.year = i
  this.yearCyl = i-1864

  leap = leapMonth(i) //闰哪个月
  this.isLeap = false

  for(i=1; i<13 && offset>0; i++) {
    //闰月
    if(leap>0 && i==(leap+1) && this.isLeap==false)
    { --i; this.isLeap = true; temp = leapDays(this.year); }
    else
    { temp = monthDays(this.year, i); }

    //解除闰月
    if(this.isLeap==true && i==(leap+1)) this.isLeap = false

    offset -= temp
    if(this.isLeap == false) this.monCyl ++
  }

  if(offset==0 && leap>0 && i==leap+1)
    if(this.isLeap)
    { this.isLeap = false; }
    else
    { this.isLeap = true; --i; --this.monCyl;}

  if(offset<0){ offset += temp; --i; --this.monCyl; }

  this.month = i
  this.day = offset + 1
  return getChina(nowYear,nowMonth,nowDay,parseInt(this.year),parseInt(this.month),parseInt(this.day));
}



function getChina(year,month,day,nongyear,nongmonth,nongday) {

  if(month==1 && day==1){return sFtv[0];}//0101 元旦
  if(month==2 && day==14){return sFtv[1];}//0214 情人节
  if(month==3 && day==8){return sFtv[2];}//0308 妇女节
  if(month==2 && day==14){return sFtv[3];}//0312 植树节
  if(month==4 && day==1){return sFtv[4];}//0401 愚人节
  if(month==5 && day==1){return sFtv[5];}//0501 劳动节
  if(month==5 && day==4){return sFtv[6];}//0504 青年节
  if(month==5 && day==12){return sFtv[7];}//0512 护士节
  if(month==6 && day==1){return sFtv[8];}//0601 儿童节
  if(month==7 && day==1){return sFtv[9];}//0701 建党节
  if(month==8 && day==1){return sFtv[10];}//0801 建军节
  if(month==9 && day==10){return sFtv[11];}//0910 教师节
  if(month==10 && day==1){return sFtv[12];}//1001国庆节
  if(month==12 && day==25){return sFtv[13];}//1225 圣诞节

  if(nongmonth==1 && nongday==1){return lFtv[0];}//0101*春节
  if(nongmonth==1 && nongday==15){return lFtv[1];}//0115 元宵节
  if(nongmonth==5 && nongday==5){return lFtv[2];}//0505 端午节
  if(nongmonth==7 && nongday==7){return lFtv[3];}//0707 七夕
  if(nongmonth==8 && nongday==15){return lFtv[4];}//0815 中秋节
  if(nongmonth==9 && nongday==9){return lFtv[5];}//0909 重阳节
  if(nongmonth==12 && nongday==8){return lFtv[6];}//1208 腊八节
  if(nongmonth==12 && nongday==24){return lFtv[7];}//1224 小年
  if(nongmonth==12 && nongday==29){return lFtv[8];}//0100*除夕

  return getChinaDate(nongday);
}


/**
 * 根据传入的农历日期获取到对应的农历日期
 * @param day
 * @returns {string}
 */
 function getChinaDate(day){
  var a = "";
  if (day == 10)
    return "初十";
  if (day == 20)
    return "二十";
  if (day == 30)
    return "三十";
  var two = parseInt(day / 10);
  if (two == 0)
    a = "初";
  if (two == 1)
    a = "十";
  if (two == 2)
    a = "廿";
  if (two == 3)
    a = "三";
  var  one =  parseInt(day % 10);
  switch (one) {
    case 1:
      a += "一";
      break;
    case 2:
      a += "二";
      break;
    case 3:
      a += "三";
      break;
    case 4:
      a += "四";
      break;
    case 5:
      a += "五";
      break;
    case 6:
      a += "六";
      break;
    case 7:
      a += "七";
      break;
    case 8:
      a += "八";
      break;
    case 9:
      a += "九";
      break;
  }
  return a;
}
